Paper article



May 15, 1934. H. w. MARLrlN `1,959,134

PAPER ARTICLE Filed Aug. 18, 1955 i y ,Kn/Mm@ Wfmw WW2 Patented May 1.5, 1934 "UNITED STATES PAPER ARTICLE Harold w. Marn, Malveme, N. Y., assignnito' American Seal-Kap Corporation, Long Island City, N. Y., a corporation of Delaware Application August 18, 1933, Serial No. 685,708

SCIaims. (Cl. 65-53) This invention relates to paper articles in the nature of shallow receptacles, particularly-suitable for use as coasters for supporting tumblers 4or other glasses out of contact with a table top or other supporting surface on which such articles are placed, or for use as ash trays or the like. The article, therefore is made in the form of a :dat shallow circular tray having an upwardly extended inverted lg-shaped rim and preferably provided with spaced depressed outside base portions by which it may be supported on a table or other surface.

For a more complete understanding of this invention, reference may be had to the accompanying drawing in which Figures 1 and 2 are top and inverted plans, respectively, of an article constructed in accordance with this invention. Figure 3 is a detail section to a larger scale on line 3-3 of Figure 1. Figure 4 is a section similar to a portion of Figure 3, but showing a modification.

Referring to the drawing, the article comprises a lower disk 1 of paper which has preferably beentreated with a waterproofing agent such as wax and a fire-proofing agent and has also been subjected to a moisture treatment which facilitates the molding operation. Advantageously this disk may first be subjected to a moisture and fireproong treatment and then immersed in melted paraflin wax with preferably a small quantity of hardening wax such as carnauba or Montan, the wax being at such a. temperature as to vaporize a portion of the water absorbed in the initial Wet treating so that on subsequent cooling, condensation of moisture acts to draw the wax into the pores of the paper. Suiiic'ient wateris retained, however, to condition the paper for subsequent molding operations.

The disk so treated is then subjected to forming operations between suitable dies to produce a marginal U-shaped rim 2 thereon surrounding a central substantially fiat depressed portion. Preferably this rim is formed with spaced radial stiifening corrugations 3 over' its upper edge. These corrugations not only facilitate the forming operation but also stiften the margin so that it is more resistant to deformation and also produce an ornamental effect. 'Ihe outer downturned edge portion of this rim, as at 6, is preferably pressed together so that it presents on its outer face a smooth curved contour.' This pressure also acts to compact the paper material, which must be gathered together somewhat to yreduce it to the smaller diameter of its finished article is being usedas an ash tray.

condition over that of the blank from which it was made, so that it tends to retainvits molded condition and isr resistant to arin'g outv even when subjected to moisture. Preferably also the depressed portion of the disk within this margin is formed with concentric downwardly extending corrugations orribs, as at`4 and 5, to provide .spaced supporting areas to contact with a table or other supporting surface on which the article may be placed, or, as shown in Figure 4 the rim 65 thus may be extended below the depressed or base portion of the disk. These ribs 4 and 5, or the downwardly extending rib' 6 shown in Figure 4, with which may be used one or more depressed ribs on the base if desired, serve to denne air.70 pockets beneath the article which act to protect the support on which the article is placed from the heat of burning material thereon when the On the Vcentral depressed portion of the -disk within the rim 2 is preferably positioned a second or liner disk 7 which may be of similar material to the other disk, but manif desired, be of a more absorbent material so as to absorb condensation running down the outside of a. glass w tumbler which may be placed thereon and thus prevent it from being spilled over onto the table or other supporting surface. This disk '7 is of 'suf. ficiently smaller diameter than the disk 1 so that its outer margin is in frictional engagement with the inner upstanding wall of the rim 2 so that' no fastening means for securing the two disks together is required. The article thus produced is in the form of a shallow receptacle having a rounded upstariding marginal rim which presents a pleasing appearance and has sufficient rigidity to maintain its shape with ordinary usage. No cut edge of the disk appears since this is presented downwardly in the down-turned portion 6 at the 95 ammonium sulphate, and an agent such as alcohol 101i which tends to soften and fluff up paper stock. The outer disk or shell 1 which should be relatively stiif and strong and non-absorbent may well be fireproofed by an ultimately insoluble agent such as sodium silicate which may be added to forcing diskseated on the central portion of said first mentioned disk and with its margin-in frictional engagement with the inner upstanding wall of said rim, said iirst mentioned disk having concentric annular downwardly projecting `ribs for engagement with a supporting surface and said reinforcing disk presenting a flat upper face over its entire area, said coaster being treated with fire-resistant material to adapt it to be used as an ash tray. y

2. A coaster comprising a paper disk having its margin pressed upwardly into inverted U-shape to A f 1,959,134 the water with which the blanks are treated b`e' form amarginal upstanding rim surrounding a central substantially iat depressed portion, said rim lhaving upwardly projecting radially extending reinforcing corrugations on its upper surfaceV forming spacingridges toreceive a cigarette or cigartherebetween, and said coaster being treated with,a nre-resistant agent whereby said coaster maybeusedasanashtray.I

`3. -A coaster comprising a ireresis'tant paper disk having its margin pressed upwardly into inverted U-shape to form a marginal upstanding rim surrounding acentral substantially iiat depressed portion, said rim having upwardly prol jecting radially extending reinforcing corrugations on its upper surface, the material in the outer down-turned edge of said rim being pressed together intoa substantially smooth continuous surface, and a fire-resistant reinforcing disk presenting a iat upper face friotionally engaged at its Y margin with the inner face of said rim, said iirst mentioned disk having concentric downwardly projecting ribs for engagement with a supporting surface, the nre-resistant quality of saidcoaster adapting it for use as an ash tray.

HAROLD W. MARTIN. 

